Is the mechanic possessed by all the HOH similar in treatment to Alter-Egos?
Are feats, gems, etc. transferred?

Yes they would all transfer.

You need to do a search...

Reverting Questions

Its just the AE mechanic in reverse.

Not really. When you Revert, the character to which you are Reverting does not have a lower starting line, like the AE's do. So, you can Revert your Wolverage into GSX or WoS Wolverine, then watch him heal to full health.

Another difference is that Revert is a free action, while AE is a power action.

The only similarity, really, is that both are mechanics for replacing one figure with another figure.

Web of Spiderman Wolverine is not an option on Wolverage.

Ahh, knew I should have looked up his Revert power before posting. Oh, well.

The point still stands with GSX Wolverine, though. Or any of the Reverted characters getting clicks of healing, really.