Tips against Haggar with Spidey?
All they do is approach me with pipes and Spidey doesn't have a fast airdash to get the grab like Viper does.
Don't challenge it, under any circumstamce.
What you're looking to do is knock him off his feet. If you can start a BnB some kinda way (like off an H web-ball or something) then good, but if not, run away and pushblock the second that he hits your guard. If you have an assist that can counter in that situation, that's when you should use it, then follow-up into your BnB.
The minute you find an opportunity while running, try for a web glide -> BnB or web throw. If you land the web throw, pressure him on wake-up with a block string or mix-up using an assist to prevent him from jumping. I THINK lariat can cause issues for this, but I don't think it comes out fast enough to be reliable on wake-up for Haggar.
TL;DR
Respect the pipe. It's completely disjointed, so even if you time a spider sting or s.S perfectly, the best that you can do is trade, which means he gets to capitalize off of the ground bounce. Stay away from him until you can lay safe pressure.