Noticed you edited you comment.
I do still think it’s an idiotic term.
1. Your benchmarks are about inline for that SoC. (The iPad 4, I mean)
2. In a world where they weren’t, this is simply a fact of battery technology. I say this as a software engineer who has suspected this has been Apple’s practice for years and wasn’t remotely surprised. Apple’s solution is actually quite clever if not somewhat disingenuous and pretty difficult to achieve — allows you to eek out a few more crash-free months from your older battery devices.
3. iPads have much larger batteries than iPhones and are rated for double the charge cycles (1000 instead of 500). They don’t need to throttle your 5-6 year old device to make it be slow.
Geekbench is hands down the best synthetic benchmark on the market — the founder of the company is the one who discovered the “buy new iPad” mode you speak of. If it’s not showing up on Geekbench, it’s not happening.
That said, Your battery is in a much better shape than I had expected. Given all The hullabaloo going on right now, you might be able to get Apple to replace your battery even if it doesn’t fail the diagnostic test (for a fee of course), if you’re really concerned about “buy new iPad mode”...
But your device really is ripe for replacement at this point it’s using a 32-bit chip that’s several generations behind.