The title "Hulk is Hulk" is pretty weird since the stories seem to confirm the exact opposite: that no two Hulks are the same -- they are, pretty much, a collection of distinct individuals, some stronger some weaker. Or are all these distinct versions of Hulk about to fuse together into a single being?
The WWH version is indeed very strong by Marvel standards; not strong enough to take out a full-powered Juggernaut but still likely the physically strongest Marvel herald.