Just because 1 person tests a map doesnt mean it deserves the title of beta... my maps get tested by 20 different people each and every alpha through the imps... and with 10 alpha updates under my map, thats at least 200 people testing my map, give or take a few, and not even that may be enough, I feel as though my map may go into A20 and further...
the appeal of starting in alpha may not seem that nice at first, but compare 1 tester, to more than 100 testers... which one is gonna be more balanced? which is gonna have the best and most pristine gameplay?
really, it may deserve the title of Beta, but maps should only be in beta when the gameplay is all but final... and it might be really well balanced, or it may not be... and if it had other versions tested before this, they should have individually been put on here, rather than wait it out until beta, as we have some great people that can test your map and give a lot of feedback right here on this glorious site... so use it!