I think it really depends what you define as scalping.
When scalping intramarket or calendar spreads, you just decide the range from a glance at a short term chart, I use 5 min, sell the upside, buy the downside, try to take 1-2 tics on each trade. Balls determine the clip size.
No real charting skills, just a couple of mental levels will do,
no pattern recognition required ,
I do not even know what people mean by Level2 , is this depth?
What on Earth is "the tape"?
Just showing my general ignorance here but I hope the point is clear.
Skill is in finding the nice range bound spread to scalp.