So Team Sonic had three days to do this whole thing and suceeded in doing it in three days, the other teams also follow the same timeline thing (same levels in the same order, the sky (which is the closest you can get to guessing the time of day) is the same in all of them, they get there at about the same time). So, everyone stayed up for three days straight with no problem? Even the six year olds that didn't know the world would be destroyed if they didn't move fast enough?
The "three days" thing ended at Rail Canyon/Bullet Station...it seemed as if that's where Eggman was orchestrating his attacks from. Anything after that point occurs after those three days, and is all a matter of stopping Eggman from going any further.
The other thing to remember is that this isn't Eggman, this is Metal Sonic pretending to be Eggman. He wants data on Perfect Chaos (which he gets from Froggy and Chocola Chao), as well as Shadow (which he gets by luring Rouge in with the hope of finding Eggman's treasure), and Sonic himself, by inviting Sonic to stop one of Eggman's schemes. It's entirely plausible that there was no superweapon beyond the Egg Albatross, and the deadline was irrelevant, bar a motivating factor to get Sonic to where Metal wanted him.
If Team Rose's levels are easiest, doesn't that technically make them the strongest team?
I assumed it was because the other teams already steamrolled through the levels. Team Rose is just fighting the remnants of the Egg Army.
Shadow can't remember who he is, and is desperate to know. So why doesn't Rouge tell him? She was there. As if his pastdeeds are the stuff of secrets?
I just assumed trying to tell a person "You're supposed to be dead" would take too much time.
While playing Shadow the Hedgehog, this troper would keep asking (sometimes out-loud) himself, "Why doesn't he just ask anyone who was in Sonic Adventure 2? In fact, why doesn't anybody from SA2 just TELL HIM WHAT THEY KNOW?!? Rouge especially!
I think we're giving Rouge quite a bit of credit here. I think what Shadow wants to know is what happened before he was put into cryo. He has obviously realized that some of what he remembers about 50 years ago is falsified, or just plain wrong. And Rouge barely has any information about that.
Shadow's amnesia results in him not remembering who he is and, more importantly, who Sonic and the rest of his friends are. HOWEVER, he DOES explicitly remember that Sonic has Super Powers...but not himself? And it can't be him picking up on context clues because nobody spoke specifically of Super Sonic. Additionally, why didn't Sonic stop to remind Shadow of his own super powers? Shadow obviously remembers enough to execute Chaos Control and Sonic could have seriously used the help. Even if Sonic didn't explicitly know Shadow had amnesia, a simple "Shadow, you too!" could have led to them reminding Shadow of his powers.