Am I wrong? Mind you, I'm not in any way saying the Dems are better, even though it's my registered party. I'm very much willing to listen to evidence to the contrary. I just haven't seen it, and I have been looking.
Yes, you are wrong. Very wrong.
Go look up some actual vote tallies for prominent pieces of legislation recently. Even easier, check out the various ratings done by conservative groups on congrecritters' voting records. They've done the leg work for you. The ACU has a pretty good methodology, check it out here:
http://www.conservative.org/congress-ratings What you'll find is that Repubs tend to vote against liberal bills and for conservative bills by a margin of 5 or 10 to 1. It's only a few consistent standouts that break the trend (Snowe, Collins, Murkowski, etc). There really is a big difference between the two parties, both in ideology and in actual voting record.
There's a common misconception about this, arising, I think, from the internet echo chambers. With the congress divided fairly evenly between Repubs and Dems, a few swing votes from either party determine whether a bill passes, and a small handful of RINOs can make big waves. When it happens, people falsely blame the entire Rep party for an outcome caused not by the Rep party but by the Dems and those few RINOs. The blame gets repeated on forums and in blogs, people read it and repeat it over and over again, and pretty soon nobody recognizes that it's completely factually false. The misconception becomes common knowledge and nobody bothers to check it against the facts.
The biased media play a part in this process, too, by ignoring Repubs who are pushing conservative policies and highlighting Republs who go the liberal way. Maverick McCain comes to mind here. And how many people noticed that in the past few months Republicans have been pushing efforts to privatize Medicare and to dissolve Freddie Mac and Fannie Mae?
The antidote to this misconception is to check the facts. Look at the actual voting records. The evidence is there for all to see.