No, not really. The Thayer's definition states that homoioma means "that which has been made after the likeness of something; a figure, image, likeness, representation; likeness, i.e., resemblance, such as amounts almost to equality or identity [emphasis added]." It is a narrow but extremely important distinction, and renders MacArthur's statement (as you quoted) very wrong in claiming that Jesus was "in reality" exactly a man, because He was not. He was a sinless man, and such had never before existed, even Adam who was created sinless but by disobedience introduced sin into his nature and also into the nature of all men. Jesus was truly a "likeness" and not an exact copy, the only difference, but a highly significant one that set Him apart from all other men, being His sinlessness. He was fully Man, fully God, but the kind of man he was had never before been seen, nor has such a man existed since. He was actually a better man, though still human and therefore able to take upon Himself the punishment of sin for the whole world.