This works so long as both arrays do not contain the $" character (usually space). Otherwise, two lists might "match" even when they don't:

@a = ('the flying','dorito','brothers');
@b = ('the','flying','dorito brothers');

"@a" = "the flying dorito brothers"
"@b" = "the flying dorito brothers"
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So if you're sure that the two arrays are $"-free in that sense, then go ahead.