LED vs Incandescant

I haven't raced competitively since christmas trees had incandescent bulbs. I used to be able to see the light coming on, being on, and going out, as lots of racers did.

Always foot braked, .500 tree. One car ran mid 14's, the other 11.60's. This was in the 80's and 90's.

Since then, I have run test n tunes with toys, but have never been concerned with reaction times, until recently. I have a foot-braked auto that stalls about 3200 rpm. Runs 11.80's. I may race it. But, I see stuff about packages that are near perfect. I used to go rounds running a couple hundreths over my dial, and averaging roughly .530-.540 lights. (Back when .500 was perfect.) And sure, I won a few with worse packages, and lost some with great packages. "That's racing."

Do I stand a chance? And, how do you cut a light when that LED is suddenly "on"?