Metascore is the score of the movie on the metacritic website.It assigns scores almost in the same range as rotten tomatoes most of the time.Scores are given by movie critics and the weighted score(based on the fame of the critic) is finally assigned.Usually,very good(critical favorites) movies have scores above 70.
KB and kB refer to kilobyte-a unit of information or computer storage equal to either 1,024 bytes (2 10) or 1,000 bytes (10 3), depending on context. MB refers to megabyte-a unit of information or computer storage equal to either 1,048,576 bytes (2 20) or 1,000,000 bytes (10 6), depending on context. A megabyte has approximately 1,000 (or 1,024 to be precise) kilobytes.
MB, KB and GB are all shortened names measuring the amount of memory or disk space that is used by a computer. KB stands for kilobyte, which is 1000 bytes. MB stands for megabyte, which is 1000 kilobytes. GB stands for gigabtye, which is 1000 megabytes. It should be noted that computer operating systems and computer hardware manufacturers measure these sizes differently.