You must remember that Bitcoin transactions are "settled" in that 7 TPS timescale, whereas VISA transactions are merely "recorded" in their 50K TPS rate.
In reality, it generally takes a minimum of 15 days for your VISA transaction to "settle" with your bank account. Thereby the true TPS rate is orders of magnitude lower for VISA.
With regard to latency bitcoin is still worse in practical applications - because VISA confirms a transaction immediately even if as you write it settles after 15 days - while bitcoin more or less settles after and an hour - but the first confirmation you get only after about 10 minutes.
Obviously in any case it will be faster than Bitcoin.
[1] https://usa.visa.com/dam/VCOM/download/corporate/media/visa-...
If we use the 7 TPS number that people seem to be using (even though the real number I think is slightly lower), then we end up with 220,752,000 transactions in a year; three orders of magnitude less than Visa.
Bandwidth != Latency