Im looking at buying a set of kitchen knives. The mundials seem ok for the price & I like the feel of them also. Just how much better are the wusthof or Henckles & how much better is the quality of the steel as they are a lot more expensive.
You might have better luck over in
KnifeForum's In The Kitchen sub-forum. But beware: You're not likely to get the answer I suspect you're seeking.
As for your question: I don't know. I do know that, as I was researching kitchen knives prior to buying one (yes, one) for my wife for Christmas, I never saw anyone, anywhere recommend Mundial. Then again: I didn't often see Wusthof or Henkles recommended, either.
In more general terms...
You're asking if you can "get away with" a less expensive brand. Maybe you can. I guess that depends on what you want out of life. Personally, my life is too dear to me to waste it on cheap products. You're asking "how much better" the more expensive brands are than the less expensive. That's a bit like asking how much better are Milwaukee or Makita power tools than Black & Decker. How much better is a Stihl or Husqvarna chain saw than a Homelite. Well,
I've never seen B&D power tools on a construction job site, nor Homelite chain saws used by professional tree crews. Such people can't afford tools that either won't perform reliably or otherwise aren't up to the demands of the job. It's also been my experience, in examining these less expensive, so-called "consumer grade" tools at stores and in occasionally using those owned by friends and acquaintences, that they just don't feel as "good" or operate was well as do the professional tools. I don't know, but I'm going to
guess that the same applies to kitchen knives. And while I don't cook, I figure my wife deserves tools every bit as good as those which I'd have for myself. So, when I bought her
a knife for Christmas, it was a Shun Classic.