He might not be better than Tarasenko, but Craig Button named him the best goal scorer in several drafts at the time of Brock's selection in 2015. I assume he meant the best since 2010, when Vlad was selected 16th overall.
Yea, I agree his offensive tools are amazing and his shot is remarkably strong and accurate. I just don't see him being better version of Tarasenko, I mean it's ridiculously high level, like prime Kovalchuk or pre-injury Stammer level of player.