it's a good gaming switch, shorter travel than the linear red. 3.4mm vs 4mm.
Tp4 is correct. Personally, I already consider MX reds to be too sensitive for gaming though (even though I haven't bothered to modify/replace mine). Resting your fingers on them can cause them to actuate. I don't think that a higher actuation point has any real benefit in games and can cause more accidental presses instead. They might make sense if they had slightly heavier springs.
I chalk MX silver up to "gaming" board OEMs looking for some new gimmick to sell boards. It started life as a Corsair exclusive, and is marketed specifically as a gaming switch afterall. I think they're an answer to a question that was never asked.