The best replacement for megapixel is optical zoom.

The best alternatives to megapixel are rated as following:
★★★★★  optical zoom
★★★★  print size
★★★★  dpi
★★★  megabyte
★★★  vga
★★  ultrapixel
★★  sensor size
★★  pixel
★  12 megapixel
★  zoom
★  8 megapixel
★  photo size
★  image sensor
★  5 megapixel
★  tv lines
★  pixel size
  18 megapixel
  3 megapixel
  megapixel
  13 megapixel
  picture size
  4 megapixel
  10 megapixel
  2.0 megapixel
  image resolution
  analog cctv
  vga camera phone

Your alternative for megapixel is not listed? Suggest!
Speaking about megapixel, one probably shouldn't forget about canon.

Other search terms related to megapixel and their ratings are:
★★★★★ canon
You have in mind a companion for megapixel and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of megapixel in all years. Click on graph for more.
megapixel
optical zoom
print size