I understand that "easy" is a relative term, but I mean it in its most general and comparative sense. This game just seems easier in comparison to the previous games just from what I'm seeing from the videos shown from the uploader above. Also, I understand that the gyms are predictable; as they have been since 1998. But they have always posed some sort of basic challenge throughout the games - and whilst online play is definitely a big thing that they are going for this time, I don't think that neglecting the solo adventure is the way forward (if of course, that is what indeed they have done).
Ah, so your basis of "easy" depends only on the pokemon levels themselves. In that case, not really, it's about the same if not harder. Pokemon only have 100 levels, with 8 gyms that's only 12.5 levels per gym on average, making the second gym level 25. However, they have been putting a lot of puzzles into the gyms in recent generations, making the gyms akin to minigames on their own, and this will likely be even more challenging in X/Y, and probably why they are pitching a fit about people getting a copy before the world wide release date.
The solo adventure is always basic, and always set around one main story, to catch them all. Not much you can do to ruin that, seriously, anything they add to "catch them all" is an improvement. The older gen games also had level limitations between gyms, done by pokemon "not obeying" you during attacks if they are too high in level, which use to be really heavy handed but is now almost negligible. The second gym badge in the last gen was up to level 30, which puts 25 as a good level to battle the gym leader.
But one thing forgotten in all this, as I said, to me .... all gyms are easy, they are predictable because of the types, even a pokemon of a much lower level can knock out a level 100 pokemon with the correct move, I know, I have done this very thing many times. Levels can only benefit you if you can match the types correctly, otherwise the level can be rendered completely meaningless, thus why I say "easy is a relative term." To some players, all gyms will always be easy.