The decks often lacks maindeck outs to a Master Peace, the True Dracoslaying King that was tributed using a monster and a trap card, their spell cards can destroy yours, they're notoriously hard to out-advantage, and to top it all off the activation of the smaller True Draco monsters prevents you from activating your own Paleozoic trap cards in the Graveyard
In principle you're ending on either Bubble Reef or Marbled Rock, with or without Crystal Heart protection, plus some combination of Toadally Awesome, Marincess Wave, Torrential Tribute, and/or hand traps depending on the composition of your starting hand, usually with good follow up in the form of draws and resource recursion
Either way, your opponent will be left with one less spell card than they had before
The English 1st Edition print is scarce and costs more than most cars
With 2600 attack, Pankratops can easily beat over many powerful cards through battle