When he was passed it maybe but not before. Was a better all rounder than Groves, level above. Put it this way Groves would never have beat Benn.
Benn and Eubank were a level below Hopkins Toney Nunn jones jnr ect. I think even though they would be favorite over him he's at that level Groves. Benn wasn't as concussive at 168 either compared to 160. I would give Eubank a bigger chance at beating Groves than Benn at that weight !
I agree they were not st that level but were only a level of those great fighters you mention, Groves is further off. I agree Benn was better at 160ib but still would have beat Groves.