That is technically correct in that there are more discrete signs, but more isn't necessarily better. The hardest thing for English speakers to wrap their heads around is that ASL is a conceptual rather than a literal language, so it doesn't need a huge vocabulary like some other languages. For instance the sentence "I gave the cup to him" can be signed in ASL as "HIM CUP me-GIVE-TO-him", which is three signs -- or possibly four if you include the sign for ME, though it's not necessary and perhaps even incorrect depending on who you ask -- whereas a PSE signer will sign every single word, so a total of six signs, but in terms of visual expression, ASL is more fluid, eloquent, and in my opinion much easier to understand.