Benchmarking die("Hello world!"); VS. exit("Hello world!"); VS. echo "Hello World!"; on PHP

After doing some useful and problem solving benchmarking with Siege we can scream to every corner of the world that exit() is faster than die() and echo

Show me the facts! I hear you screaming. Let there be facts!:

echo "Hello world!";

Transactions:         250 hits

Availability:      100.00 %

Elapsed time:        7.10 secs

Data transferred:        0.00 MB

Response time:        0.01 secs

Transaction rate:       35.21 trans/sec

Throughput:        0.00 MB/sec

Concurrency:        0.20

Successful transactions:         250

Failed transactions:           0

Longest transaction:        0.05

Shortest transaction:        0.00

die "Hello world!";

Transactions:         250 hits

Availability:      100.00 %

Elapsed time:       10.04 secs

Data transferred:        0.00 MB

Response time:        0.01 secs

Transaction rate:       24.90 trans/sec

Throughput:        0.00 MB/sec

Concurrency:        0.17

Successful transactions:         250

Failed transactions:           0

Longest transaction:        0.04

Shortest transaction:        0.00

exit "Hello world!";

Transactions:         250 hits

Availability:      100.00 %

Elapsed time:        6.05 secs

Data transferred:        0.00 MB

Response time:        0.01 secs

Transaction rate:       41.32 trans/sec

Throughput:        0.00 MB/sec

Concurrency:        0.27

Successful transactions:         250

Failed transactions:           0

Longest transaction:        0.04

Shortest transaction:        0.00

The previous test were performed simulating 25 concurrent users with a 10 times repetition. Now just imagine for one minute (or two if you need more) if 20.000 concurrent users hits your echo "Hello World" website! That will be a mess! Just by imagine myself this scenario I can't stop hearing the sirens on my mind, so please, grep through your code and preg_replace() all those echo "Hello world!" you may have there!