I don't see the Parise comparison, at all. I see Dylan Holloway, who was a man amongst boys at the college level. Really good speed, strength, and enough skill to be at least a secondary scorer in the NHL. I think it will really help Leonard that he wasn't rushed into the pros, like Holloway was.
I know this comparison would've seemed ridiculous to some just a few months ago, but Holloway finally seems to be clicking in the NHL. Hopefully Leonard has better luck, but spending that extra year in college can be really valuable, IMO.