You may be forgetting the results of some tests I did a little while back. I played multitrack sessions that were beautifully recorded of a great band and the tracks needed no plugins to sound perfect.
I only panned L Centre and R and set the same fader levels over 4 DAW's. They were Pro Tools, Sonar, Studio One and Logic. I created bounces of all of them and compared them all in Studio One. There were NO audible differences as such. I got the same very high quality mix on all of them. I got either very near or perfect nulls if I set them up that way.
But the moment you start adding plugins and doing other things all bets are off really. Then DAW's may sound different. And I think they might too. But I think if you have got a very clear picture of how you want a mix to sound in your mind's ear then you will get there no matter what DAW you are using. That is why I laugh at people who keep telling us that Pro Tools sounds ten times worse than Sonar. No it does not. It sounds fine and if you produced the same music inside that program you would more than likely end up producing a very similar result. It is not sound quality that is really driving us to use a certain DAW program. I think it is other things.
I am supposed to be using the best sounding DAW on the planet and that is Studio One right now. But I also use Sonar, Pro Tools and Logic
(especially in a teaching capacity) but I really don't hear any evidence of that at all. I think that the quality of a lot of hardware and the way DAW's process the audio are all very high now and well above the range of engineering ablities that may exist.
Unlike it was back in the analog days. Two very identical tape machines could sound very different and that was silly. Now with digital the great thing is our DAW's are all very consistent in how they sound and the differences in fact are very small. With that out of the way the way forward now is to get very creative inside that medium instead.
When I talk about DAW's sounding very consistent I mean at a base level so to speak. The level I did my tests at i.e. no plugins anywhere, we are just using the summing engine basically. But I love ther fact that you can use one EQ over another eg in a mastering situation. I am about to master a Hip Hop album and I was comparing the Nomad Factory Pultec EQ to the LP64 EQ yesterday while checking mixes and they sound like they are from two different planets! The Pultec just sounds so incredible over these mixes I just can't believe it. It is a funny EQ to use and get used to but once you do then it is amazing. This is where digital can also make something sound completely different from one thing to another.