Xbox One Updates: 8
Next Update: TBD (3D BR Support)
PS4 Updates: 11 (Starting from 1.50, I have excluded 4 updates which I think are pre-release updates)
Next Update: Next Week (3D BR Support)
Both have released mostly stability patches, Microsoft just releases more detailed release notes while Sony just put 'Stability Improvements' in the release notes. I don't own a Xbox One so I can't say what features are missing, but for the PS4 its lacking a few that it should have had since launch or by now at-least.
what are you trying to say here? Do you mean that Sony has released equal number of feature updates as Microsoft but just calls them "stability improvements"?