Welcome Kazbah, no problem hijacking!! It really all depends on what the defined benfits are. Many are linked to inflation or future salary sales, etc. If you move, you are then dependant on what you get under Defined Contribtuion. More often than not, it is recommended not to move. What you need is details as to what the benefts are under the old scheme as this is clearly defined. One benefits that you may have if you are transfering and you are intending to leave within the two year, is that you carry years of service over so if you leave and the new scheme has the rule that the employers contribtuions are take back, they cannot as you effectively have 4.5 years service. But this would have to be quite a benefit to forfeit the guarantees under a Defined Benefit Scheme. Each case differs, you really need to do some comparisons as to what you will get as to what you could get based on growth rates and also annuity rates. Would be great to have a crystal ball.
I would not be surprised in the coming years that advice given to transfer out of DB schemes into DC schemes were considered bad advice. In the UK where I practiced for some 15 years, many advisors were fined for recommending such transfers (you may recall the big scandle in the UK over the miners pensions) and now you have to be qualified in a specific exam to even discuss this.