Just from the fact that it's from you and you probably hacked up a Valve map with like 10000 health lockers everywhere so the gameplay is forgeted as balls, it probably already sucks.
From the fact that you said it sucks, it sucks more.
From the fact that you're too scared of harsh criticism for being a stupid map maker, it sucks even more, as does you.
From the fact that it's called Arena_Tester.bsp, it most definitely sucks donkey rooster.