Gold/RP calculator gives these results (Magic 1, 50 turns):
1 Arcoscephale - (Golden Era) Philosopher 0.65
2 Man - Daughter of Avalon 0.75
3 Independents - Sage 0.80
4&5 Tien Chi - Master of the Dead 0.85
6 Mictlan - Mictlan Priest 0.91
7 Pythium (Serpent Cult) - Serpent Acolyte 0.91
6-10 Other independents - Conjurer 0.91, Garnet Priestess 0.94, Jade Priestess 0.94
11-13 Various Tien Chi themes - Master of the Way´0.94
14-15 independents - Witch 0.94, Lore Master 0.95
16 Jotunheim - Vaetti Hag 1.01
17 Pangea (Carrion Woods) - Black Dryad 1.02
18 Abysia (Blood of Humans) - Newt 1.02
19 Pythium (base) Theurg Acolyte 1.02
20 Ctis/Indep - Shaman 1.03
From this, it seems that sages are one of the best researchers, but that there are lots of other options. However, the fact that nations/themes with the best researchers are often not played in competitive games seems to show that people rely they can find Sages or almost as good independents.
Going only 10 turns introduces lots of other independents and some more national troops, including Harab Seraph, Initiate of the Deep and Seithkona. However, many of the national researchers from the top 20 of 50 turns remain in the list, and the very top doesn't change much. Sage is still great.
Without playing games but looking at these numbers, I would say yes. Nations that can research fast/economically aren't played as often as they should if the magic really rules the game, and sage is in the very top both in short and long time invervals (?).
So, I hope that is good enough explanation for why someone without MP experience voted on this. You should really add "I don't play MP but am interested in the result" for those like us that don't play multiåplayer...
