How should game collections be reviewed?

If every game ever made were on a single disc, would that compilation deserve a “10” just based on volume? Would it make more sense to average the reviews of all the games and use that as the compilations official review score? Should points be deducted from the score for every game the reviewer already owns? And if this every-game game came out again in five years, should its past availability negate any value it would otherwise offer the consumer?

These are the questions I have been pondering as I look through the reviews for Sonic’s Ultimate Genesis Collection. Many bring up the fact that much of the collection has been released multiple times in multiple formats. Something seems faulty about criticizing the quality of a game on the basis of its distribution. →  18 Wheeler American Pro Reader