Sorry if this is a "noob question", I'm fairly new to PNO, but...

Sorry if this is a "noob question", I'm fairly new to PNO, but what's the difference between Deep Heat and the Thermalife cream?

I know that Deep Heat is a well known brand - their international sales must be huge. Most consumers think that all these creams are the same anyway so they buy purley on marketing.

It makes more sence to me to spend a million dollars on a commerical like the "Old Spice ad", and hope that it goes viral rather than pay scientist to develop new products/patents.