You seem to misunderstand. We aren't saying play perfectly. You WILL take damage against tager. We are saying to not be stupid around him. Tager is someone you have to zone correctly. When you do a combo don't stupidly stand next to him. Give him his space. If you don't respect this rule, you end up thrown into the air and taking massive damage. Tager has no guaranteed in. He cannot do a move and be promised an approach you can do nothing about. You need to learn to take advantage of tager's lag time on his moves. Tager is ridiculously slow, he is predictable on his options, and he has a game plan that requires he not combo into his throws, if he wants ANY guaranteed damage.
Tager has ways of forcing ins. ALso because you ahve to give tager space, you also are giving up guranteed ins. (because they weren't guaranteed) When you fight tager, until you hit finish you are guaranteed SHIT. I promise you the players that Tager beat were taking risks and making decisions under pressure, and were hoping it would pay off. The problem is, Tager can easily run the clock. If he gets off one throw, you need TWO combos to catch up. This is because on average, you will do two combos for every ONE throw tager gets off.
Also, how much damage are you doing with a combo? Obviously not enough, because you should be able to run the board for damage on a hit confirm. You aren't taking advantage of the time you DO get to deal damage to him. If you haven't been doing at least 3.5K, you need to hit training.
I haven't even seen you play and I can already guess at what you're doing wrong. He's probably the best character for you to fight, because he will beat you into shape quickly. He enforces good habits.