Catch wrestling/ submission wrestling is actually very well thought out and does consider what happens in a real fight... in catch wrestling there are two main strategies... to use dominant positional relationships... much like Bjj but with more positional options with limitied use of mount, backmount, or guard (because without a gi these positions are hard to hold).... and to use your opponents natural movement reactions to your movements to lead your opponent into a submission... Catch wreslting is a highly refined and intelligent approach to ground fighting that has scientific thought at its core... Bjj is also a refined and intelligent approach that relies more heavily on the dominate relationship strategy... it is because of the dominant relationship strategy that Bjj doesn't seek as many leg locks as catch/submision wrestlers... since in general the arms are not as powerful as the legs... also Bjj was developed around the wearing of the traditional jacket or Gi... which creates different handles and leverage for the practitioner... making positions that face the jacket lapels straight on more viable and add to the submission opportunities... it should be added that the core of Bjj comes from Japanese Jujitsu and Judo... so the basis of Bjj origionates with jujitsu and judo principles... where as catch wrestling was developed in Europe as a way of omiting the need for a potentially biased referee when two villages had a wrestling match... it was reasoned that if the man who lost the match would cry out then everyone would know who won and lost without the need for a thrid party... the difference between these two arts is approach... both are methodical, well thought out and refined... and they complement each other very well... in some ways modern submission wrestling is a blend of both catch wrestling and Bjj... the key is to not get caught up in the marketing and politics of one particular style... just have fun... I hope that this answers your question... and I hope this opens the minds of those who see catch wrestling as a lessor form of ground fighting... take care, steve
