edges and information

[alphatmw]

lets say theres some situation in which all in and folding are the only moves (late stage of SNG or whatever).

everyone believes 100% that they know your range for moving in is exactly TT-AA, AK/AQs. since they know your exact strategy, and assuming this isn't the optimal strategy, do they have the edge on you?

now lets say you also move in with 99, but they don't think you do. do you have the edge now?

what if you don't move in with TT as they believe. who has the edge?

do these questions depend on the stack size or any other factors?