I am not sure of all the differences because I have not read Lyle's book.
Lyle's book is significantly longer and contains more data. And of course you can't go wrong with Lyle's books. Reading a series of protein articles he wrote for i think Mesomorphosis influenced me to write Protein Essentials.
You can read more about Protein Essentials
http://maxcondition.com/page.php?7
thanks
Coach Hale