Is there a difference ? Well yes.
Firstly the debt you signed up to is irrelevant, that is your problem and of no interest to a potential employer. Likewise the wife, kids, mortgage, goldfish. They are all your concern not the employers.
The age is a difference. Yes you may have more life experience but that will probably hold little sway if you are also competing with 30 year olds coming out of the military with solid flying experience. Likewise 30 year olds from other flying backgrounds who may be able to offer more relevant flying experience.
As for the 25 year old with similar hours. Lets be honest 250 hours is next to nothing to an employer and if they are seriously considering such low hour candidates the competition is likely to be intense for such places. Somebody who can offer a good training background, good education, and a personality that seems to fit the bill will also have the advantage of 5 years on the 30 year old candidate.
At the end of the day, if you are overcome the hurdle of interview selection, you have the opportunity to sell yourself. Ultimately that will likely be the deciding factor. A 21 year old adonis trained at the best school money can buy, and touched by the hand of God, will still be sent packing if he doesn't impress the selection panel. Personality counts for a lot, but it is often a difficult choice with many good candidates, and it would be untrue to suggest that youth and a solid training background isn't an advantage in an otherwise equal field.