doesn't matter how hard it would be, it would have tired vitor out.
cain had a crazy hard time getting JDS down
99% of the damage Cain did was standing tho
GSP is arguably the best MMA wrestler in the world and even he has to set up his takedowns with striking, otherwise he never would've gotten rocked against Condit. It was inevitable that Bisping would've had to exchange with Belfort.
If avoiding the KO were as simple as spamming takedown attempts then Crocop, Liddell, Wand, JDS, Anderson Silva, Machida, etc would all have 0 knockouts to their name.