Update please disregard, I should have read more carefully...

It's cleaner because it also works when multiple elements are present:

use strict;
use warnings;
use 5.010;

my ($a, $b) = (4, 5);

say "@{ [$a // 2, $b] }";         # 4 5
say "@{\($a // 2, $b) }";         # Not an ARRAY reference at foo.pl l
+ine 8.
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The feature of \( LIST ) to return the same as map \$_, LIST is not always intuitive.