Dex proves his mettle as both a capable top and bottom (with Alisa and Kelly, respectively). Regardless, TCG is utterly banal. Setting aside for the moment its mindlessly chatty interstitial material and bargain-basement production values, most of the blame can be laid upon lazy videography.
Oral action is captured well enough - but God forbid the cameraman has to get on his knees to cover a decent penetration shot. This "now you see it, now you don't" footage merely serves to dilute any action which begins to resemble something steamy... and those moments are few enough as it is.