From my personal experience... THE TYPICAL SYLVAN PLAYER QUITS once the guy knows he cant win... and i gotta ay IVE SEEN MORE MANHOOD IN A FLYING FISH DECK PLAYER !!! (Which is completely f2p and also way more stronger than sylvans in my opinion).
Geargia is awesome. Just as archfiends and flying fish, so, no excuse to beat sylvans. Go and try the epic flying + oyster + powerful rebirth + SSA combo. And sylvans are just obliterated. Hell that's what ive already done!
Cyber angels are awesome. I used a tweaked Masked Hero deck to get Dlvl 20 with 2x divine wrath and 2x chalice for sylvans. LOTS of animal plays on the way up