bnamericas.com— Spanish telco Telefonica (NYSE: TEF) may have paid a pretty penny to purchase Portugal Telecom’s (NYSE: PT) 50% stake in their joint venture Brasilcel, which controls Brazil’s largest mobile operator Vivo (NYSE: VIV), but the Spaniards most likely will feel rest assured that the 7.5bn-euro (US$9.76bn) price tag was worth every cent, analysts told BNamericas…