A bit late to the party, but I thought I'd offer a different perspective on Ouendan since I happened to play EBA before getting it (thanks again, Angela! ^_^).
First of all, Ouendan has made me greatly appreciate all of the changes and additions that I took for granted in EBA. What I missed the most wasn't even the ability to skip song intros. Instead, not being able to save replay data and the lack of detailed score reports in the options menu were what really bugged me. Without those, it's difficult to know exactly how and where you messed up in a song, so once I got my S ranks I tended to not bother trying to increase my score. No replay data also meant no multiplayer for me, so I guess I'll have to seek Youtube to find clips of the scenarios.
As for difficulty, I thought EBA was more difficult overall, although that may have to do with my playing it first. However, I do think that Ouendan had a tendency to be more "tricky." The timing on quite a few of the songs took a long time to deduce, mostly because the markers seemed to correspond less to the vocals and more to the rhythm. Additionally, marker placement was more difficult than it was in EBA. There were numerous instances where a marker would be on the far left side on the screen, and then the next marker would be on the far right, obscured by my hand. All that said, the patterns were a bit more repetitive (particularly in RSG), and I don't think anything in Ouendan compares to the nonstop onslaught of hit markers known as "Survivor."
Shanghai Honey on Cheergirls made me its prison bitch for the longest time.
Interestingly, I had heard of the difficulty of "Shanghai Honey" and "Ready, Steady, Go!" on Insane and made it my goal to get my S ranks on those first to get the hard stuff out of the way. Surprisingly, it only took about 10-15 tries each. In fact, while it took me many times to even get to the final section of "Shanghai Honey," once I finally did I was able to get the timing down my second time through. Similarly, the only part of RSG that gave me trouble was the beginning of the second section, which happened to have the aforementioned markers obscured by my hand.
For me, the true challenge was "Koi no Dance Site," which had no discernable timing whatsoever. I'm exaggerating, of course, but I had a surprisingly tough time with the song on Hard (though it was a tad easier on Insane). Ironically, I "accidentally" S-ranked the song on Easy my first time through it >_>
Speaking of bowl cat, why don't we talk about the game's story and characters for a change? What are you favorite scenes, and who are your favorite characters?
I loved the entire final scenario. Everyone teaming up for a little world saving never fails to get my heart racing.
I also found "Over the Distance" to somehow be even more touching than it's EBA equivalent.
Favorite failure scene? Definitely the first section of RSG. I love seeing Cinderella secretary be crushed. That'll teach you for putting me through "Koi no Dance Site"!!
In the Matsuri Competition, I think it's hilarious how the American tourists join in on the race
The funniest part about that was the stereotypical representation of Americans as having blonde hair and big noses.
Gah, I just realized I'm suffering from a severe case of Ouendan/EBA withdrawal. Give me EBA 2, stat!