SAN RAMON, Calif. (AP) — Apple seems to be prevailing in an antitrust trial examining whether its mobile app store illegally skims profits from smaller companies. This despite it facing nagging questions about its financial vise on people buying digital services on iPhones, iPads and iPods. The skirmish has sharpened the focus on the exclusive payment system that Apple has built into transactions occurring within apps installed on its family of mobile devices. That control has fueled a lucrative stream of commissions that is being challenged by video game maker Epic Games. The judge who will decide the case seems to be siding with Apple while also wondering if apps should be allowed to show other options.