Also remember that even VISA, the largest transaction processor in the world, only averages like 3000 or 4000 txs/sec. So while the LN may be able to technically handle on the order of 1 million txs/sec, it will never get close to that number
It can easily get to this number and VISA is not the right example here. LN can handle billing for pay videos, phone calls, ect. on pay per second level. VISA cannot do it.