As longe as the line is flat, you are fine. Ping 40 to 50 is great. I flew my whole AH career with 140 to 170.
Steady is what your looking for. You can have pings in the 200's and you'll be fine as long as it is steady.
Not quite. Steadiness applies to warpies, not the inherent latency that makes things seem where they aren't. A 200ms connection, regardless of how stable will have a measurable and visual impact, especially if the 40ms person is expecting another 50-60ms person - that 150ms difference can make a difference.
One of them TheJudge connections..Eagler