It is not answerable in a definitive sense.
A 360p video may be encoded at 500 Kilo bits per second (Kbps) or it may be encoded at 4 Mega bits per second (4Mbps).
Also the delivery method used by a site affects it, e.g. if it sends data in bursts up to line speed then it will intermittently affect latency.
This is not an ISP thing, more a factor of how TCP data is affected on a connection.