in reply to Subs created at run-time are faster than those created at compile-time

You're code is the same as 
timethese(50000, {
    begin      => sub { begin()    for 1 .. 1000 },
    init       => sub { "init"     for 1 .. 1000 },
    declared   => sub { declared() for 1 .. 1000 },
    runtime    => sub { "runtime"  for 1 .. 1000 },
});

[download]

so I'm not surprised init and runtime are faster. Use use strict; use warnings;!!!

In Section Seekers of Perl Wisdom