it is not the similarity between similar critters of DNA which works... it is the exact correspondance of DNA *errors* - non-functional DNA, crippled DNA - in the same loci of the same genetic sequences which constitute the smoking gun of common descent.
think about it.
it is analogous to a particular flaw in the printed lettering of word 39 on page 231 of the 3rd print run of the 17th edition "Ostrogoths; and the Roman Women Who Submit To Them" - that shows up in all copies from that print run, in that location, but nowhere else and in no other print run. - it is inarguable evidence that they all came from the same common ancestor (printing typeset, in this case).
evidence just don't get better'n that.
I promise I didn't copy your post #160. Great minds....