For a marketing page, it should really keep the numbers consistent. If SuperTCP can give me a speedup of "up to 4x", then 2.5 hours does not become 15 minutes and 50 minutes does not become 5 minutes. That is a speedup of "up to 10x".
I am also worried about fairness: do SuperTCP streams muscle out other streams? Is that how they grab all the bandwidth?
TCP has back-off built-in for a reason: if everyone is as greedy as possible, massive congestion occurs.
Criticizing you from a pulpit is easy, kudos to you if you fix things up over time :-)