Importing Photoshop Images to Microsoft Office

Hope someone can clarify something for me.

i have created an image in photoshop size 200x280 pixels and saved at maximum quality. i then made an adjustment to the image (not to the size) and used save for web and used a different file name.

so, i now have two images identical in size 200x280 pixels, i then proceed to import both images into microsoft office apps, word, excel, powerpoint....etc.

the image i saved using maximum quality is reduced to about half it's original size, the image i saved for web is the same size as it's original.

can anyone tell me why it is resizing one of the images?

all i know when you import it you can resize it just click on the image and thats it..