A2DP would not be a good choice for real-time audio, since it's optimized for quality and defined latency rather than low latency. It does so by using reliable transports which use large retransmission buffers, making latency much worse.
An analogy would be Shoutcast (MP3 audio streaming, mostly used for web radio) vs. RTP (mostly used for real-time communications these days): Both have their strength and weaknesses.
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A2DP would not be a good choice for real-time audio, since it's optimized for quality and defined latency rather than low latency. It does so by using reliable transports which use large retransmission buffers, making latency much worse.
An analogy would be Shoutcast (MP3 audio streaming, mostly used for web radio) vs. RTP (mostly used for real-time communications these days): Both have their strength and weaknesses.