I hate comparing regions, but since this topic has come up I'll try to add some objectivity to these claims.
I think a decently fair method for comparing the strength of Europe vs NA would be comparing ESAM's and MVD's performance at BEAST compared to their performance at various other NA events. I'll be using Smashwiki for this due to convenience; it's not the most comprehensive source, but it should be comprehensive enough to give an idea of how the continents stack up.
MVD
33rd/1096 | GENESIS 3 | January 15th-17th, 2016
17th/256~ | PAX Arena | January 29th-31st
Top 8 (event didn't finish)/400 | TGC 6 | February 6th, 2016
4th/267 | B.E.A.S.T 6 | February 19th-21st, 2016
13th/162 | Shots Fired 2 | March 5th-6th, 2016
9th/255 | Glitch | March 12th, 2016
17th/513 | Pound 2016 | April 2nd-3rd, 2016
2nd/192 | TGC 7 | April 9th, 2016
ESAM
17th/1096 | GENESIS 3 | January 15th-17th, 2016
7th/256~ | PAX Arena January 29th-31st, 2016
Top 8 | TGC 6 | February 6th, 2016
3rd/267 | B.E.A.S.T 6 | February 19th-21st, 2016
13th/162 | Shots Fired 2 | March 5th-6th, 2016
9th/513 | Pound 2016 | April 2nd-3rd, 2016
5th/192 | TGC 7 | April 9th, 2016
I think it's clear from these results that both ESAM and MVD placed noticeably better at BEAST than at NA majors (MVD more so). In terms of top level talent, I feel the data suggests BEAST is nowhere near the level of an American supermajor and is much more comparable to a large American regional like 2GGT or Glitch.
Something else I'd like to point out is that after iStudying's disappointing performance at Pound, we had multiple Greninja mains in this thread john for him citing jet lag. This is fair, it's impossible not to be exhausted after making such a long trip with such a significant time zone difference. There was no way iStudying was playing at 100%. On the other hand, I saw absolutely
nobody give these same excuses to ESAM and MVD after their performance at BEAST, even though they were playing under the same conditions. Perhaps it's because they managed to place well regardless?