I figured that where you saw those numbers, again they are worst case. Are you claiming that you routinely discharge your battery at a continuous 100 amps in your vehicle? In other words, a full discharge in about 3 minutes? If so, this is something that the alternatives won't do more than a couple times, if even at all. So lipo still seems like a solid choice IMO.
I know fast guys who have to be approaching, if not exceeding 200 race cycles, lots of guys have been running Orions for over a year, and still love them. The same guys used to churn through their previous batteries.
Bottom line thou, we are all free to do as we wish, and as a guy who has been around for a while, the available choices these days, either way you go, are dramatically better than what they used to be.
Cheers!