The midfielder told the Evening Times: "It doesn't mean anything that we are back on top right now. With all the cup football, Champions League games and SPL fixtures ahead there is a helluva lot of football to be played and we are not going to get carried away.
"So many things can happen between now and the end of the season and there is no way you can read too much into who is top right now."
The competition for places is fierce, and McCulloch said: "When you see Charlie Adam and Brahim Hemdani - who was arguably man of the match against Stuttgart - in the stand for Aberdeen that tells you how tough it is to get a start at Rangers.
"Jimmy Bell, our kit man, told me it is the biggest squad in his time at Rangers, so that tells a story about our depth. That should stand us in good stead.
"The gaffer rested me for Hearts and I was suspended for Stuttgart and I certainly felt the benefit of the rest against Aberdeen. It's tough keeping everyone happy but the gaffer knows what he's doing."