How great is the difference in sharpness of text between the retina screen and the TB display? Enough difference that your eyes need to adjust going from one to the other if they are side by side, the retina not in clamshell-mode?
Yes, you can easily tell the difference. One just keeps wishing higher DPI on the TBD. But it basically comes down to screen realestate. And then TBD is as good as it gets. For now.