My only real sources on the Sengoku Period have been Extra History (which /r/badhistory taught me is quite terrible) and Akira Kurosawa films (please understand I only just got into the time period), and watching the latter implied Nobunaga was more open to Europeans. In Kagemusha he's shown drinking 'European wine', red wine that Ieyasu isn't used to. He is also shown being blessed by a priest, and the armour he wears is much closer to that of the Western knight than samurai. Is this accurate? Any information would be appreciated.
Yay, this is my topic!
The question is, more open compared to who? There were a whole lot of powerful Japanese warlords at the time, and responses to Europeans (mostly Jesuits, at this point) ran the full spectrum of total acceptance and conversion (most notably Otomo Sorin, who actually sent an embassy to Europe, but also Takayama Ukon, for example) to nonchalance to dislike/distrust (esp. Buddhists, although the Jesuits also liked to exaggerate when confronted with people who disliked them).
We have several personal descriptions of Nobunaga by the Jesuits, esp. Luis Frois, who was stationed in Kyoto and knew Nobunaga personally. There are a few famous passages of Nobunaga visiting the Jesuit houses in Kyoto and showing great curiosity in European curios and showing some desire to learn about Western knowledge (I think there is a reference to him asking about the globe), but other than that, I am not sure if there are any evidence to him being particularly interested in European culture (although I also recall Azuchi seemed to have a Christian seminary -- can chase this up later).
By the way, Ieyasu himself was quite open to European ideas: after establishing the bakufu, he allowed English and Dutch trade and appointed Englishman William Adams to improve Japanese fleets. Related note, but Hideyoshi is also portrayed as being quite anti-Christians since he ordered the whole 26 Martyrs thing, but I think he was actually fairly ambivalent towards them -- notably the anti-Christian edicts weren't seriously enforced under his rule.
To answer your question, I'm not sure if Nobunaga was more accepting of European influence. There simply isn't much evidence; none of his policies affected the Europeans much. He allowed them to exist and seemed fairly genial towards them but to my knowledge he didn't really have much to do with them beyond that.
I'm quite happy to waffle on at length about this subject so if you're interested in more please let me know!
Oh, and sources: Boxer's "Christian Century" (old but good); Cooper's "They Came to Japan" should have the relevant Nobunaga quotes.