It's still probably at wattage as advertised, but I wouldn't be surprised if some models that differ by "only" 100W had only difference being current limit resistor set on the different value.
This is not true, as a rule, even if it is true here. Sibling comments point out that the void left by the missing connector would be tricky to fill.
There are a variety of other reasons that it might not be worth their time to change or omit the $.08 connector, but it would be worth their time to remove e.g. the expensive $3 voltage regulator IC.
But to your point, the same logic may be applied to the sticker-vs-PCB tradeoff, and it may turn out that they are identical. Someone disassembling them and comparing the circuits would be able to determine between the two cases.
I’m guessing thermaltake did the same, hiding some pins behind a sticker because that’s cheaper than creating a whole new version of an existing product.
Also, this reminds me of a common CPU manufacturing practice; most CPUs from a generation are the exact same, except that the ones with flaws in them will have that part of the CPU disabled / severed and the unit sold as a slower and cheaper model.
https://boingboing.net/2023/08/04/hp-printer-usb-port-covere...
A quick google confirms that some HP Printers have USB ports that are covered similarly, but with a warning not to use it, rather than just being hidden.
Edit: fixed a technical issue about current & voltage
Also to your point, a sticker than can fall at any moment shouldn't be relied upon for safety.
