by far
Based on what? On paper? Because last season none of your mentioned teams were close to likes of EG and LOUD. Like you could make same comment about any team pretty much. And how does that make the region better than others? Currently it looks like Fnatic and PRX will be on a island(PRX ofc made a chance) and rest are fighting for 3rd spot.
I think you are right Americas top teams did get worse but other teams may have gotten better. For me as a fan of the region this means it will be more interesting because there isn't an obvious team that will dominate everything. There may be and probably will be but we will get to watch and find that out.