Because it's the KHL
List me off the top of your head what other players were doing to kill time during that lockout, or the previous lockout, or the 94-95 lockout, or any holdout year where said player went and played in some other inferior league elsewhere.
Your list, and 99.9% of everyone else's would be extremely short.
Reason being, nobody cares. If you care, you're in the very very very small minority. No HOF ceremony will dip into said player's missing year.
Nobody cares what Jari Kurri did over in Italy when he left the oilers/NHL for a year. Nobody cares what Neal Broten did over in Germany when he had a brief holdout with Minnesota. Do we even care what Ilya Kovalchuk has been up to since he left the NHL? Nope. Etc. It's pretty moot. I mean we're comparing Mike Ribeiro to Malkin here for cripes sake.
There are obvious differences between holding out and playing in Italy or Germany, and playing in the KHL due to lockout.
During the '12-13 lockout, these were some of the players that played in other leagues:
KHL- Malkin, Ovechkin, Datsyuk, Kovalchuk, Backstrom, Voracek
Swiss- Kane, Tavares, Spezza, Thornton, Zetterberg, Eriksson
AHL- Hall, Eberle
Sweden- Kopitar
Finland- Karlsson
Germany- Giroux, Pominville
Czech- Jagr, Plekanec, Krejci, Hemsky
That's 11 of the top 20 scorers in 2012 and 9 of the top 20 scorers in 2013 that spent at least some time in a pro league prior to the lockout being resolved.
During the '04-05 lockout, these were some of the players that played in other leagues:
Russia- Jagr, Kovalchuk, Elias, Ovechkin, Datsyuk, Gonchar, Malkin, Morozov, Heatley, Richards, Nylander
Sweden- Naslund, Forsberg, Hossa, Alfredsson, Cheechoo, Jokinen, Zetterberg, Gaborik, Huselius, Morrison, D&HSedin
Finland- Jokinen, Nylander
Swiss- St. Louis, Thornton, Tanguay, Heatley, Savard
Czech- Jagr, Elias, Hejduk, Prospal, Straka, Havlat, Palffy
Slovakia- Hossa, Gaborik, Satan
Germany- McDonald
AHL- EStaal, Spezza, Gionta
ECHL- Gomez
That's 11 of the top 20 scorers in 2004 and 16 of the top 20 scorers in 2006 that spent at least some time in another league during the 2004-5 lockout. Of the top 18 scorers in 2006, the only ones that did not play in another league in 2005: Crosby (juniors), Selanne (knee surgery), and Sakic (age 35).
I think time in another pro league should be considered as extra credit, which is sort of how I look at international tournament play. I wouldn't outright penalize players that didn't play in another league, but if a player decides to not play hockey if they can't play in the NHL, that wouldn't exactly help their case either. There are players that never played in the NHL that have quite lofty rankings on HoH based solely/mostly on their play in foreign leagues and international tournaments. I think you have to look at the various factors:
* Was it the player's choice to play in a league other than the NHL?
* Did he have good reasons to play or not play in another league?
* If he played in a league that was not the best available, what reasons had he for that?
* How well did he play in the league chosen, in comparison to what might be expected given his NHL performance before/after that time?
In Malkin's case, I believe he deserves full credit for his KHL time:
* He played in Russia during the '05 lockout, in '06, and during the '13 lockout.
* The NHL was not in session while he played in '05 and '13, and he was still under contract in '06.
* The Russian leagues were the best available in '05 and '13, and he was under contract in '06.
* He performed about as one would expect during those years.
So I would assess his Russian years as follows:
'04-05: His 32 points in 52 games wasn't bad, but would add minimally to his career value (and nothing to his peak/prime value).
'05-06: His 21 goals & 47 points in 52 games was good for 2nd & 3rd and close to the league leaders (23 & 52). I would probably give him credit for a season around the level of his NHL rookie season the following year in '07. This adds to his career value and adds some to his prime value, but probably doesn't help his peak value much.
'12-13: He played 70% of the schedule and did not play the remaining 30% due to the beginning of the NHL season. His number would have equated to being second in goals (to his linemate) and leading in points by 20% over 2nd. At least we know that he was healthy enough to withstand playing 37 KHL games and that he was playing at a very high level. If I had to guess at his performance over an 82 game NHL season (rather than 48), probably top 10 in scoring, perhaps even top 5, despite missing 17 games. This would add some to his career and prime value, but again it may not help his peak value much.