my @array1 = (
 {'platformid' =>  '22', ... },
 {'platformid' => '100', ... },
 ...,
 );
my @ordered_array1 = sort { $a->{platformid} <=> $b->{platformid} }@array1;  # ascending numeric sort
...;
my $rc = Compare(\@ordered_array1, \@ordered_array2);
...;