Considering it's the first Tales game on PC, and Zestria didn't get the greatest reception during the Japanese release, I'd say those are at the very least good pre-order numbers. Hopefully we end up with healthy enough sales to warrant more Tales ports and new releases on PC.
To compare it to other North American numbers:
Tales of Destiny - 68k
Tales of Destiny 2 (Eternia) - 58k
Tales of Symphonia - 470k
Tales of Legendia - 83k
Tales of Phantasia - 88k
Tales of the Abyss - 72k
Tales of the World - 39k
Tales of Vesperia - 144k
Tales of Symphonia 2 - 136k
Tales of the Abyss 3DS - 45k
Tales of Graces F - 63k
Tales of Xillia - 230k (estimation of both US+Europe)
(Source: Randos on Gamefaqs that I found on Google, and Gamespot. Feel free to correct.)
Looking at this, 38k on day 1 seems like a decent portion to add to the pile.