If both of these show a tree of life extending back in time, with common ancestors at branching points, and both of them show the same structure and the same common ancestors, and neither of them suddenly stop at some point ... what would your conclusions be?
I could conclude that things could have evolved from one another, if the evidence could show that. A wolf and a chihuahua still have the same amount of chromosomes and basic internal physical structures. If time were an unlimited constant I wouldn't expect the variations to merge into something different entirely. However, if I find the evidence for the nested hierarchial phylogeny tree to be damning I will re-evaluate my views on the physical world.
I think the mystery of limited nature would be found in the evidence categories you prescribed. No further semantical dueling will suffice. If there are limits, perhaps we have not found them but I wouldn't close the door yet.
Thanks for your time, I have found the EvC a blessing.