In the past different Kung Fu styles wanted an edge over other Kung Fu systems and above all they needed their own identity. To pass on their bible of knowlege they 'wrote down ' their system in the way forms or sets. Within the exterior of the Animal forms were hidden the essences of that system.
Now anyone who has ever trained extensively in the Five animals would know that the systems has a superficial 'Art' behind it, for example the tiger, crane etc. But the actually training behind the movements is Kiu Sau science. The animal part is only expressed through the intent, ie. panther work on speed and power develoment, snake on forward deflection with intent without head on resistence. Which is same as the expressions of bil, Tan, Wu, and huen sau which all use the science of forward deflecting energies. The crane element can be seen in the bong sau which 'floats' and redirects forward and pressing energies. Or the crane jong which allows one to protect centre whilst hooking or controlling just like the Fok Sau in WC.
So its not what the exterior look or shape of the hand , its what the intent of what hand is achieving. That's why we all end up speculating the meaning of forms, why are there so many interpretations enen on the SLT ?........its because we cant always see the intent or energetics behind the arm unless someone explains it to us. Just in the same way i was surprised when i was squashed by a small Gracie BJJ guy, i thought it was silly for him to lie on top of me cos i thought i would just flip him off but cos couldn't see his energy he felt twice his weight and i struggled till he eventually choked me out.
Tiger specialises in clearing, pressing, folding and it does this to trap and and close the gap. And this can be seen in the Lap Sau, Pak Sau and gum sau which is identical in most Southern systems. Behind the expression of the 'claw' is gouging, palm, grabbing, Pak, pressing chopping and so on.......... Even the Po Pai Guen from WC is no different to the tiger one. When it comes to forward close range striking, the claw changes to phoenix fist. So the Tiger system is really using the intent and the attributes of speed and ferosity, a bit like saying 'she fought like a 'Tiger' ??? . Most animal styles dont actually fight like the animal style they represent that impression was partly fueled from the likes of Golden Harvest and Shaw Brothers to sell more tickets.
What in my opinion sets WC apart from the other system is that its taking the same tools and re-packaged it to create a faster and more efficient fighting system. So the tools WC share are pretty much the same its just that the science of strategy is different. And from what i have read and seen, WC was born from the need to teach revolutionarys the skills to kill using the most efficent means. So the monks needed to take the best and most efficent from what they already had. The creators of WC didn't re-invent the wheel, they just created a F1 wheel out of one from a tractor !
I'm not here to advocate the Shaolin 'Animal' arts, but just to clarify a few points. Off course i understand if you spent years studying one system, there is not always time or the will to study others. I for one would not be in a position to judge the merits of ground fighting as i have no knowlege other than what i see in the media and through some brief interactions. So i wouldn't judge a persons ability to fight based on their forms or general physique as i feel its the fighter's ability to execute application, power and strategy that make's the real difference.