Holyfield couldn't KO a 45 year old George Foreman!!!

Tyson fought a ton of chinny fighters too dude

When Wlad has someone hurt he likes to make sure they are 100% ready to go, so it's more of a consensual KO....he COULD go for broke all the time but that would make countering him a lot easier and the key for any fighter is to minimize their flaws and Wlad's style does that