It is not declared as exaggerated. It is declared as a 0.87 arcsecond, and shows us why we can catalog stars behind the sun, and infact use the sun and these augmented and split rays to analyze exoplanets. Your assertion is that we can't, because this is "exaggerated". But in fact it isn't, and this is exactly we we observe these things. We can infact observe stars directly behind the sun, showing how extreme this bend is over huge distances of influence by Sol. This arc will be sustained around the super massive influence of the star, creating continual bend at a 0.87 arcsecond degree (along the entire length of the influenced rays, which creates more bend over distance).
It seems to me you are interpreting this as a single event at a point, when its a gradienting event along the whole spheroid of influence. Greater the mass, the more bend of rays traversing that distance of influence
Update: added this video, also from NASA which demonstrates the extent of bending rays from another star as Sol passes them. This whole event is gradient of effect, and the close the rays to the star, the more bending, and also focusing (passing through our solar lense).
