Saying it's 55-45 TL is just cocky and unrealistic. Even if you think you're good at the matchup, it's still over the top.
Saying it's 40-60 would mean that I'm a better player than the snakes I have beaten, assuming equal MU exp (which we pretty much have), and I am most definitely not a better player.
"-NEVER land in front of snake...."
Then play different snakes. If they read that you're gonna land behind them, (which apparently you do everytime), they can buffer a turnaround and do the same exact things as if you landed in front of them.
They're at a frame disadvantage for most things if they have to turn around first, and every other option but ftilt require more physical work and room for error, so the most likely option is ftilt. Which puts us at a 2 frame advantage (if they jab we have no advantage). But I suppose if you want I can start landing in front of them and get utilt killed.
"-If ftilt hits on shield..."
If you shield the first hit of ftilt, you should follow it up with a gtfo.
-If you do anything but jump out of shield, you'll get hit with a full ftilt.
-If you airdodge they can easily dash and powershield if you zair, then punish with... anything, really. Our airspeed is not comparable to his ground speed and range combined. If you land a zair out of this or you go through your full airdodge unpunished, play better snakes. (admittedly I do this method about half the time, but only because I don't think quick enough to nair.)
-If you double jump you'll get hit with ftilt1 and be out a jump and get your landing punished. (same as if you nair, but then you're forced to land on stage predictably)
-If you nair, you're only at a 2 frame disadvantage from airdodge, meaning a strong chance of hitting them. At worst, you take 8% and some knockback, but you keep your second jump and can go back to camping.
Overall the nair provides the lowest expected value for damage received and the only (though low) expected value for damage given greater than zero.
"-Utilt is god for TL, spam the **** out of it, and follow it with a bair every time."
I wouldn't recommend this at all. Hitting shields with utilt is asking for 21%.
Why do you think spam=hitting a shield? You can use a move a lot without being an idiot about it.