Thing is...we've only really seen 3 masks in action. And only one of them really going all out (Ichigo).
Consider that Shinji with mask was keeping easy pace with Grimmjow. It was 1-armed Grimmjow, but still. No shikai, no bankai. Just the mask.
Shoot, the only release among the Vizard we've seen is Kensei, and that's just his shikai.