I don’t own either of these tools.
I agree that they appear to be nearly identical, with the exception that one is nickel-plated steel and the other stainless steel.
Stainless steel is better than carbon steel at minimizing rust, especially in wet or damp environments. However, carbon steel is generally tougher than stainless.
There are exceptions, but I’m not generally a fan of things that are plated or coated, as these surface treatments often wear off over time.
Personally, if I were going to get one, I’d go with the stainless.