The big 4 would have struggled a lot against him at San Jose. On slower court he doesn't stand a chance except maybe against Federer.
Lets see what he does at IW and Miami where everyone is playing and we will see the gap.
Other youngsters arent in Raonic's league yet.
On slower surfaces the difference in movement, deffense, return and baseline consistency is too big for now, last year IW-Miami was very dissapointing from him, hope this year he can fullfill expectations