you say cats  can prowl , wind serpents cann't , but prowl for the most part is a pointless , and useless ability, big deal it can stealth  unless your a N. elf hunter who can shadow meld what diffrence does that make , and the damage from prowl is a 1 time use per combat, which negates the effectivness of the ability...now if prowl was more like a vanish then a traditional stealth that might make its value go up.

  Also cats don't have lightnign breath..lightning breath is armor piricing as well as ranged. does not matter if it is a druid in bear form with 32k armor, does not matter, because the armor is bypassed..with cats that armor would render the cats claw/bite relitivly useless damage wise. but if you still prefer cats i'd say  still dump the cat for a ravager there damage is better , and there armor too. cats are soo obsolete.