>>26870752no it isn't
could be compared to gen 3 if it wasn't because of how terribly slow is and the HM drowning makes the worst pace out of the series. The pokemon designs are some of the worse of the entire series, but if you say that's about opinion then what you can't argue is that the pokemon balance was terrible (only 4 new fire pokemon added, one being a evolution of a pre-existing one and the other three part of the same line). The worst thing is how difficult it is to play when all the pokemon you catch do not learn useful movepols, ending up with pokemon that do not even learn by leveling moves of their own type (the worst offender is toxicroak)
The graphics are also terrible, being replicable in hacks of gen 3 goes to show how little improvement it did from previous gen.
And the worst tracks of the entire series, HGSS butchering completely the OST from gen 2