Node-sqlite3 seems slow compared to Python's sqlite3 module

I am recently trying to build a small website on Node.js as well as node-sqlite3 due to limited memory resource. I built a similar small-scale website in the past with Python and found that node-sqlite3 seems to be quite sluggish compared to Python's sqlite3 module. I did a batch of 1000 SELECT operations on both and noticed node-sqlite3 needed almost twice as much time to finish. Did anyone else notice the same thing? If I would like to continue using Node.js, any suggestion on optimizing the db access?

Update: I've added code I used for testing:

Node.js:

var sqlite3 = require('sqlite3').verbose();
var util=require('util');
var dbfn = './db.sqlite';

var db = new sqlite3.Database(dbfn,sqlite3.OPEN_READONLY, function(err) {
  if(err) {
    console.log(err);
  } else {
    var perpage=10,max=500,table='data2012',kw='sa';
    for(var offset=1;offset<max;offset+=perpage) {
      stmt = util.format('select * from %s where xxx like "%s%" limit %d offset %d',table, kw,  perpage, offset);
      db.all(stmt);
   }
 }
});

Python:

import sqlite3
DATABASE = './db.sqlite'
db=None
try:
  db = sqlite3.connect(DATABASE)
except:
  sys.stderr.write(os.getcwd())

table='data2011'
kw=('sa%',)
perpage=10
max=500
for offset in xrange(1,max,perpage):
  stmt = 'select * from %s where xxx like ? limit %d offset %d'%(table, perpage, offset)
  rs = db.execute(stmt, kw)
  rs.fetchall()
db.close()