Surpass Ovechkin this season? Perhaps not. If Laine can somewhat sustain some of this productivity while still making the transition into NHL, he might give Ovechkin run for the scoring title. But I think the odds for that are slim. After closely watching Laine evolving as a hockey player these past years I would never say never at this point. Laine can surprise you (in a positive way) when your least expecting it. If we compare their rookie seasons, the thing to remember is Laine is 18 yeards old while Ovechkin entered the league at the age of 20. That's a huge deal breaker.
As a complete player throughout their careers? Definitely yes. While he may never achieve the dynamic side of Ovechkin's game and be the most explosive skater on the ice, in my opinion Laine is the smarter player of the two and has more layers in his game. Laine currently leads NHL in goals while being 18 years old with 14 games behind. That's beyond impressive, and also if you look at his goals, none of them are flukes. He's shown he can score in variety of ways while possessing one of the best shooting arsenal out of all the active players in the game. If you've seen his games, you can see his passing (and in general, the talent to find other players on the ice) is not far behind his ability to shoot the puck. He'd have a lot more assists if his team mates had more luck cashing in the tape-to-tape passes, especially in the recent games. If he can accomplish all this while playing his first games across the pond (while still adjusting and learning), who can say what this kid looks like in a few years? The potential is through the roofs and I don't think everyone still understands the kind of a ceiling this guy has.
Right now he's reminding the Finns why we raved about him (from what 14-15yo onwards?), how he won the MVP titles as a 17-18 year old in FEL playoffs and in the WHC (both extraordinary/historical deeds), breaking all sorts of records and proving most of the doubters that his game can and will translate into smaller rinks.
There'll be ups and downs this season and it's not going to be a fairy tale all the way up until the end, but he's got the ability to finish the season in a memorable fashion. No question about it. He will be there with Ovechkin and the rest of the best of the players when he's done growing and learning.