I think you're well aware that the effective tax rate paid on money in the top bracket was nowhere near 70% and that Eisenhower would have never supported such a thing, either.
The effective tax rate for the highest bracket, 38% again? Or still 35? Either way, the effective tax rate is likewise notably lower for the highest income.
Lies, damned lies and statistics. You're playing semantic games, because you don't like the truth.
https://www.politifact.com/truth-o-meter/statements/2015/nov/15/bernie-s/income-tax-rates-were-90-percent-under-eisenhower-/