He's absolutely the kind of player who would fare better in the NHL than the AHL. Speed is not at all the issue.
He was runner up for rookie of the year in the SHL and called a 'great talent' by the papers over there 2013-2014. I don't think expectations were ever exceptional for him, but we all expected he would break camp in the NHL and stick during the 2015-2016 season. Talk was that he could be a solid #3/4 guy, and that was legitimised by being a top pairing anchor in the SHL at 21, and following that up with a great rookie year in the AHL at 22.
After that, Toronto's management group changed, and we all kind of noticed how the prospects drafted by the previous group started to disappear and get replaced and those that stayed got moved out down the depth chart. Connor Brown is the notable exception to that.
I'd say with Loov, the trouble is he was never enough of an A-List prospect that he really forced the issue. New management had some new guys who they tried out first. Hunwick got signed. etc etc. Loov looked great in camp but he was moved back to the AHL in favor of these new #5/6 guys and we thought, well, that's unfair, but he'll get his chance.
He went out there and did his thing. He played his game. He didn't dominate so much as to force the issue, but that isn't his game. He's a stay at home d-man with a heavy shot, great first pass, and hits like a dumptruck out of control down a steep hill. Meanwhile, the capable, NHL established guys did their thing on the 3rd pairing, the guys that the new management group picked themselves got first dibs, and frankly, we had no real injury problems either.
He got 4 games last year at some point as you'll see. He played great, and that was the consensus on the boards as a whole. He posted two very pretty assists ... then he went back down again and that was that.
Cue this year where Polak gets signed again as a free agent and Loov just keeps doing his thing. More new prospects shuffle in and he's not really moving down the lineup or anything so much as well, yeah, we can all see he's not going to get a chance here.
I don't know what your management group is going to do, but as i wrote above, this guy is absolutely good enough to play in the NHL.
I'd say you absolutely won the trade.
A classic case of fleecing a player from another organisation that was just a bit too much in the muck to get the chance he deserves. It happens all the time. Not necessarily the case where you end up with some multi-million dollar star defender, but you end up with a quality player of higher value than what you gave up. Someone who can do useful things. And frankly, with his winning personality, someone you'll love.
That said.... worst case scenario he's a rock on your AHL team till he goes back to Europe and gets paid for the next decade.
Unless Kalinin is a really good player.