Yes, mainly due to the presence of the flame deflectors. I'm not so sure about the drop-down panels, though.
For the 054A FFGs in PLAN service, every ship has two flame deflectors located right behind the twin YJ-83 missile cannister groupings.
View attachment 123994
View attachment 123995
Meanwhile, the 054AP FFGs operated by the Pakistani Navy, which are armed with YJ-12 AShMs have no such flame deflectors.
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View attachment 123997
Besides, there's the observation where the YJ-12 missile cannisters actually span across much of the 054AP's beam length - Which, as a result, doesn't leave sufficient spacings for the flame deflectors to be installed behind them. The 054B FFG, while being wider than the 054A, is only wider by around ~2 meters from satellite observations by others - Which, again, may not be wide enough for the flame deflectors to be installed there.
Of course, this is based on my (and Big Bun's) current observation, which may change if the PLAN decides to go with YJ-12 for the 054Bs instead.