node-firebird vs node-firebird-libfbclient (pure JavaScript driver vs Firebird library wrapper)

Denys Khanzhiyev (node-firebird-libfbclient creator) wrote on nodejs mailing list:
I must admit your lib is faster than mine (See the response from Henry (node-firebird creator) , it is the result of the firebird library mode of operation : synchronous vs asynchronous mode of nodejs)

Here is code
https://gist.github.com/2854642

here is ab results

node-firebird-libfbclient:

Concurrency Level: 5
Time taken for tests: 3.346934 seconds
Complete requests: 1000
Total transferred: 885000 bytes
HTML transferred: 821000 bytes
Requests per second: 298.78 [#/sec] (mean)
Time per request: 16.735 [ms] (mean)
Time per request: 3.347 [ms] (mean, across all concurrent requests)
Transfer rate: 258.15 [Kbytes/sec] received

node-firebird:

Concurrency Level: 5
Time taken for tests: 2.928723 seconds
Complete requests: 1000
Total transferred: 885000 bytes
HTML transferred: 821000 bytes
Requests per second: 341.45 [#/sec] (mean)
Time per request: 14.644 [ms] (mean)
Time per request: 2.929 [ms] (mean, across all concurrent requests)
Transfer rate: 295.01 [Kbytes/sec] received