To broadly reckon where the two sides stand techwise...
Earth has gravitic propulsion and habitats, its Centauri based but that doesn't matter much. They have reverse engineered some Minbari tech but it is a slow process. Most ships will still be using Centauri or League based tech.
In terms of offensive tech that means lasers and pulse weapons as standard with missiles and energy mines as heavy additions. Earth seems to prefer using its energy mines as direct fire which makes sense, they are anti-proton based weapons.
Heavy particle cannons are the big new tech, one shot kill vs pretty much anything.
Defensive tech would be enhanced interceptors based on newer tech. Most ships will still have regular metal armour with the exception of the Warlock which has the first batch of crystalline armour but only over vital spots.
Minbari tech hasn't changed but they have adopted the Neshaten class gunship which is smaller than a Sharlin but extremely well armed and protected as a direct response to Earth ships. They still have the best long range guns in the form of Neutron cannons and the best short range gun in the antimatter converter. Plus antimatter missiles.
Defensively Minbari armour is very good, best of the younger races and optimised for fighting shadows. No secret that Minbari ships were the only units to tank Shadow attacks, for a few minutes anyhow
Don't buy the fanon that crystal armour shatters under kinetic impact, it doesn't.
Earth still has its industrial advantage but Minbar is also mobilised and has impressive infrastructure of its own. The new Minbari ships are incredibly dangerous and this time commanded by trained officers. On the other hand with Clark in charge Earth isn't going to be playing fair either. Bad day to live on those border planets.