If you've seen all the videos; you're probably not going to see what you want.
The video of one member learning to ride who keeps falling when going up a small hill at speed - and then gets up each time and climbs it easily from that spot in first gear indicates that going slower was the solution. If going fast enough to get through whatever you are trying to get through isn't enough - the TW may not be the right bike for you.
The minimal suspension is not designed for high speed impacts off-road (you will get thrown around). It's a great trail bike - but you won't see it at "The Big Nasty" hill climb.
In some of the videos you've seen; they probably are full throttle in the selected gear (Admirals off-road uphill "12 o'clock wheelie attempt" "fail" comes to mind - hee hee).
Wish you luck in finding a great bike - be it a TW or something else. -J-