I think that 3 will be technically better than one, due to its specs (M1 Max is equivalent to 3080/3070, and you have quite a bit less RAM on the MacBook Pro), but in practice, they will seem identical. Unless you're doing heavy GPU stuff.
Apple's products consistently punch well above their specs because Apple has put so much effort into streamlining everything, develops everything in-house, etc. Just look at the iPhone, which has a 48mp camera but competes extremely well with the 200mp S23 Ultra. Or the fact that the iPhone 15 pro has 8gb of RAM, while that same S23 Ultra has 16gb. And there are other android phones that have up to 24gb (!). That's more than most laptops.
Point is, the MacBook Pro will probably be identical, if not better, in terms of real world performance. Even if the specs disagree. Also, MacBooks do really good on photoshop and such. Really you just have to choose whether you want Windows or macOS.