Both Morricone and Bacalov have had tremendous diversity and variety in their film scores, there is really no distinct "style" to them. The score for "Fistful of dollars" sounds totally different from say, Life is tough..eh providence?".
You can't say that Morricone secretley "ghostwrote" a film score for Bacalov just because a couple of guitar riffs happen to be the same. Its preposterous, and I think both composers would be offended at the assertion.
Uncknown, if you're going to try to convince the rest of us otherwise, you're going to include a bit more evidence, analytical deduction and logical reasoning to your arguement, other from the fact that the guitar sounds a little like Diabolik. I can actually come up with better examples of SW scores that would be more convincing of "ghostwriting" than the example that you put forth.