I grew up in MN competing in XC running and skiing. There are lots of opportunities for great trails around the state, namely the mining country areas. Additions to the Superior hiking trail would be a good start.
I don’t think there is enough potential for MN to compete with CO in terms of epic trails, but MN has other tourist attractions/destinations that would work well in tandem to MTB trails.
I don’t know how much biker-friendly cities plays into tourism or the "Top Bicycle Tourism" rating scheme, but I don’t envision many folks traveling to bike the inner city.
Does MN have a remote chance of becoming the top destination: Nope.
I was surprised it was in the top 5 rated destinations. Trails must only be a portion of the rating scheme.