Technically, MF lenses can be manufactured to deliver lower resolution compared to equivalent 35mm lenses since they project an image on to a much larger area of film. Hence... they can record more overall detail even though they are usually not as good as 35mm lenses when you compare 1 sq-cm of a MF neg to a 35mm neg.
If you're talking MTF, highly regarded 35mm lenses (primes, macro lenses, etc) usually rate as high as 4.6-4.8 but MF lenses typically rate around 3.2-3.8. Yet, they deliver the goods (better than 35mm) due to the large film size.
This is one reason why you can get cheap large format lenses for a couple of hundred dollars which can squish any 35mm outfit with your expensive 2000 dollar lens.