But...can he turn over 464 transactions in 4 minutes ?
Take a look at these 2 blocks from NXTs blockchain:
Blocks 417719 and 417720 both contain a payload of 232 transactions each.....which is 464 tx in 240 seconds, without a hiccup.
This is one of the reasons why NXT is holding so well compared to the rest of the alt-coin market:
NXT technology is solid, and is actually being used right now.
This is actually a quite pathetic tps which bitcoin exceeds many times(Poisson process). I get what you are alluding to however with the faster confirmation times. A 20MB BTC block limit will allow much higher tps averages of up to 8400 but the user might need to wait for the confirmation to come through (or not). The bottom line is that both bitcoin and NxT shouldn't be bragging about those numbers as they are both unacceptable and pathetic and thus we need creative solutions like https://bitcointalksearch.org/topic/lightning-network-another-proposal-to-make-bitcoin-scale-970822 to get up to 40k and higher tps to be competitive.
+1 there isn't a single platform anywhere out there anyway, not from King BTC down to the lowliest alt and all in between that is offering a good solution that would scale.
What tps can handle BTC and all alts coins combine? I don't think tps limitation of bitcoin or any others alts is a real issue for the adoption of cryptocurrency. There is more than one p2p network than can validate transaction. In the end, that is what count, imo. Thus, it might not be necessary to compare to visa tps. Services like shapeshift make tps not an issue anymore.