As someone who played TE in college it is much easier to get open as a TE than it is as a WR.
You shouldn't be comparing TE's to WR's as they are completely different positions. TE's don't get jammed like WR's do on a consistent basis. TE are facing slower LB's. It's so easy for TE's to find a zone in a defense.
It's why the position is becoming more of a threat to a offense. Im glad these guys are getting more attention as they can become huge threats to any offense.