Weak or not, If the brands match and were found Outside the house there is the inference that someone could have been out there watching or waiting at some point.
Again, Not trying to convince anyone. But this is the IDI thread so we are looking for evidence that proves or suggests an intruder.
But inferences aren't evidence. Several people have made inferences about certain things based on Ramsey's statement, things found in the home, etc...and you have been the first one to state that is not good enough.
It could be that a car driving buy tossed their butts out the window. It could be someone walking by tossed the butt on the ground. Again, to me it is a huge, huge stretch.