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[RAIST]

yes it does matter if the pixels are larger. When the dots and the gaps between them are larger, you are more likely to see the rough edges. Draw 8 pixels in a row at one size/spacing, then draw 8 more at double the size/spacing and see the difference:

o-o-o-o-o-o-o-o

0--0--0--0--0--0--0--0

Edit:had to edit to use hashes for the spacing, as the html was removing the extra space and it wasn't accurately showing the effect

Same bit map, but twice the size.

Another analogy, take a 4 x 6 photo and blow it up to 8 x 10---if you don't resample it to a higher pixel count, you are loosing quality.

No matter what, you are dealing with the same pixel count, but physically stretching it across a larger surface area. Unless you forked out the $30-50k (or however much they are costing now) for a Quad-HD (2160p), you are still dealing with roughly a 2 megapixel image but stretching it to 46", going from 90-96 dots per inch (the little o's) to 50-53 dots per inch (the bigger 0's). When you do this, you are physically stretching the size of each pixel and rough edges are going to be more apparent.