If there's a knockout Garcia is the one that could deliver it, we all know how Garcia he throws a lot of haymakers, and if these haymakers hit Lara that could be the end, but Garcia's haymaker punch could be exploited by Lara by doing a lot of counter punches if it comes down to the championship rounds which is the last three rounds Garcia could win all three rounds because he is the younger one and because is known to fade out in the championship rounds like what happen to his fight against Jarret Hurd.
I wouldn't call it a haymaker though, Garcia is known for his left hook, it's just how he is going to execute it against a technical fighter in Lara. Erislandy is a south paw, so this might give problems to Garcia as well just like in his fight against Spence wherein Spence shift and uses southpaw stance and he had a hard time hitting him with his favorite left hook.
But I do agree that one big advantage of Danny Garcia is his youth here. And another interesting fact is that Danny's father is also is as loud mouth as Teo Sr. So we might see him a lot during the hype and marketing of this fight throwing trash talk too.