"My approach really compared apples and oranges"? What does it mean?
Does "My approach really compared apples and oranges, or in this case, very different parts of the body: the brain, heart, lungs, liver, kidney and cartilage" mean "My method is very funny. It seems to have very different parts of the body go together to form a clock"?
Context:
Horvath tested the clock's effectiveness by comparing a tissue's biological age to its chronological age. When the clock repeatedly proved accurate, he was thrilled -- and a little stunned. "It's surprising that one could develop a clock that reliably keeps time across the human anatomy," he admitted. "My approach really compared apples and oranges, or in this case, very different parts of the body: the brain, heart, lungs, liver, kidney and cartilage."
When scientists compared biological "clocks" in cartilage tissue and brain tissue, they would expect not to find anything in common because these tissues are so different; they are like apples and oranges.
Does "My approach really compared apples and oranges, or in this case, very different parts of the body: the brain, heart, lungs, liver, kidney and cartilage" grammatically mean "My approach really compared apples and oranges, or in this case, really compared very different parts of the body: the brain, heart, lungs, liver, kidney and cartilage"?