I've seen that Dektol's formula is pretty close to Ansco 130 except without the glycin and one other ingredient. Maybe do a search on largeformatphotograhy.com (where Ive read it) for a quick way to try out something close to 130.
I can't really see much difference between Dektol or any glycin developers, or any developers for that matter, but ive read alot on here about how great ansco 130 is and it makes me want to try it. but dektol is just so cheap and easily available locally...
The Glycin is a significant difference. It is what makes Ansco 130, Ansco 130. Sorry you can't see the difference between developers. They are significant and worth noting. However, I don't know what paper(s) you are using, so you your results may be more minimal depending on the characcteristics of your paper choice.
To the original question concerning using a bromide paper and comparing Dektol and an amidol developer:
60 years ago, many papers were bromide. Amidol was noted as a clean working deverloper on these papers with an ability to produce good blacks. Today, many papers a chlorobromide. They seem to be less responsive to Amidol than the older graded bromide papers. However, I used it with Forte Bromoforte years ago, and I thought it produced the richest blacks and cleanest whites with that paper. It was definitley a better look than Dektol.
But there were some drawbacks:
1: the amidol was expensive
2: The amidol was considerably toxic
3. The amidol had a pretty short tray life when compared to standard MQ developers.
Dektol is a universal developer. It will produce universally acceptable results. However, the Amidol will generally produce a richer print on a bromide paper.