Who wore it better?

For buffs, the card effectiveness up wins in general utility wise. The [card type] effectiveness up increases everything from damage, np gain, crit star drop, etc. Meaning, 30% Quick effectiveness up gives you +30% quick damage, +30% np gain and +30% star drop (might be wrong on how the percentage scales, so, cmiiw anyone who knows about the mechanism more).

For servants:
1. Jalter, obvious reasons. Angra is just suck (don't get me wrong, I love him).
2. For survivability, Cu Lancer wins the game. Damage-wise, Cu Alter.
3. Alter wins easily.
4. The older one wins, obviously.
5. Iskandar, again, obvious reasons.

1 Attack up is better than buster up since buster only increases damage, but buster up usually has bigger numbers attached to it. Check the page for the servant in question if you need more info.
2 Quick up is better since it boosts c star rate, damage and np gen but c star gen up applies to your extra attack and other cards too which can be relevant
3 basically the same as the previous quesion
4 NP damage up is the worst but NP up CE's give a lot more than the card type CE's

Servants
1. Jeanne no contest. Angra Mainyu is one of the worst servants in the game. He's just sought after because he's very rare.
2. Cu lancer is more durable but Cu Alter does WAY more damage.
3. 5 star Altria is stronger but people usually consider Alter stronger because she does her job almost as well as the 5* but costs 4 less points and is easier to get.
4. 5* gill is better in every way. Kid Gill is *ok* but that doesn't cut it when there are 4 other amazing 3 star archers for him to compete with.
5. Its not really a fair comparison. Iskander is stronger overall but Iskander is still a weak 5 star and Alexander is a mediocre 3 star.

Again, its not usually fair to compare servants of different star ratings since 5* servants will always have an advantage of raw stats but their point cost is higher to compensate.