Benchmark em PHP - try vs reescrita de metodos

resultados.txt

teste1
Tempo: 0.093338966369629
Tempo: 0.083599090576172
Tempo: 0.092911958694458
Tempo: 0.084725856781006
Tempo: 0.089320182800293
Tempo: 0.082650899887085
Tempo: 0.08252215385437
Tempo: 0.092643976211548
Tempo: 0.10191297531128
Tempo: 0.09998607635498
teste2
Tempo: 0.14276003837585
Tempo: 0.12426400184631
Tempo: 0.13365197181702
Tempo: 0.13380217552185
Tempo: 0.1347861289978
Tempo: 0.13035988807678
Tempo: 0.12103509902954
Tempo: 0.11880016326904
Tempo: 0.12391209602356
Tempo: 0.12419199943542

runtest.sh

#!/bin/bash

reset
echo "teste1"
let "i=10"
while [ $i -gt 0 ]; do 
  let "i=$i-1" 
  php teste1.php
done

echo "teste2"
let "i=10"
while [ $i -gt 0 ]; do
  let "i=$i-1"
  php teste2.php
done
echo

teste1.php

<?php

class Teste {
    public function __call($method, $args)
    {
        if (!method_exists(array($this, $method))) {
            throw new Exception('Erro');
        }
    }
    static public function __callStatic($name, $args)
    {
        $obj = new self();
        if (!method_exists(array($obj, $name))) {
            throw new Exception('Erro');
        }
    }
}

error_reporting(0);
$t = microtime(true);
while ($i<1000) {
    try { Teste::animal(); } catch(Exception $e) {}
    ++$i;
}
print "Tempo: ".(microtime(true)-$t)."\n";

teste2.php

<?php

class Teste {
    public function __call($method, $args)
    {
        if (!method_exists($method)) {
            throw new Exception('Erro');
        }
    }
    static public function __callStatic($name, $args)
    {
        $obj = new self();
        $obj->$name();
    }
}

error_reporting(0);
$t = microtime(true);
while ($i<1000) {
    try { Teste::animal(); } catch (Exception $e) {}
    ++$i;
}
print "Tempo: ".(microtime(true)-$t)."\n";